Just received a call and decided to answer. They said they are from Sustainable energy solutions and asked to speak with the home owner. I wanted to keep them talking so that I could file a report with the FCC but they are getting wiser to this and hung up on me. :)
I decided to answer since it showed a CA phone number, but once I heard the unmistakeable sounds of a telemarketing boiler room, I said "Honey, there's nobody there!" to no one near me and hung up. Now I have the [***] blocked.